Improvement in rotary spading-machine



'E. H. KENT.

Rotary Cultivator. I

Patented Nov. 3; I868.

I No. 83,639.

6 O s 5Q MQW, numb gem grim-t i (hit-m.

dim

' EDWARD H. KENT, or PORTLAND, OREGON.

I I Letters Patent No. 83,639, dated, November 3, 1868.

IIWPROVEMENT IN ROTARY SPADING-MACHINE.

The Schedule referred to in these Letters Patent and. making part of the same.

Description. of EDWARD H. Knn'rs Rotary Spading-Machine, of Portland, Oregon. Figure 1 is a perspective view of the whole machine;

' Figures 2' and 3, end views and sections of same;

Figure 4 shows a collar, preventing the bars E from sliding laterally, (one on each end,) the broken or opposite end being like this. Fig. 4 also shows the angular position of the teeth or spades G; and

Figure 5, a section, looking from the front.

The chief design of this invention is to make a more convenient apparatus than has hitherto been inuse, that is, one in which the spades will not interfere when the machine is being driven from place to place, and more effectually drive the spades into the earth before they are pried upon by the progression of the drivingcylinder.

Reference will now be made to fig. 3, where O- O G, &c., represent the spades. At 0", the spade is hangin gnearly vertical, and held down by one of thelatches D, and, as the cylinder B progresses, it will remain in precisely the same position until the cylinder has passed over it.- This is accomplished by the looseness and partial rotation of the bars E on the latches D, and the distance between the bearing-bars J', this distance being just sufiicient to allow the spades to remain as they entered the ground, when, suddenly, they will be struck by one of the bars J, immediately in front, just at that time when the spades have reached the greatest depth, and, as the whole cylinder B progresses, the spade'sbeing now rigid, the earth will be broken and overturned. It is believed that this is an im rovement on former methods.

'Another improvement consists in the falling back of the bars E, (holding the spades (3,) thereby shaking off any dirt that inav have adhered after rising from the ground. I 4

These things are. accomplishedzby the parts B O D i E F Gr H I J K L M N O, as described, in the following action, to wit: The pawls H having 'been lowered, by the lever L, into the grooves M, (one on either end of the shaft N,) the rounded ends of the spade-bars E, seen at F,as the cylinderrevolves, are caught on the upper surface of the pawls H, the opposite end of the cylinder B, fig. 1, being exactly like the one shown,

and these pawls H, slots 0, and latches D being preciselyalike, and operated simultaneously by the rais ing or lowering of the lever L, and "drawn from the centre of the cylinder outwardly until they arrive near the horizontal radius of the same, when the latches D fall in behind them, and so prevent them (the bars E) from sliding back in the slots 0 until they passed under the cylinder, and out of the ground, when the latchesv D fall out from the end-bars E, at F, on each end of them, and, when the spades 0 have been sufficiently elevated, the latches D (see fig. 3) now being out, they fall to the centre, through the slots 0,- and so oncontinuously.

The concentric segment I, fig. 2, keeps the spades from coming out when they get below thehorizontal radius of the cylinder B, and to this place, and over the upper half of revolution, the central ends of the slots 0 support the weight of the bars-E and spades 0.

Now, when the points of the pawls H are raised above the place of interference by the lever L, the spades will stay entirelyinside the cylinder B, and so permit aready transportation of the machine from place to place.

The openings between the bars J may be closed by placing planks in them, and so make an ordinary fieldroller.

It is intended to make this cylinder B entirely of iron, and only the flame A to be of wood.

The letter K, fig. 1, shows an iron tire around the centre of the cylinder B, and intended to protect and strengthen the bars J.

I claim the spade-bars E, moving in slots 0, operated by pawls H and lever L; also, fastening the spadebars E, when extended outward in the'slots O of the cylinder B, bythe latches D, falling in and out behind the collars G, with the groove M, on the shaft N, and

- the concentric segment I and bars J, and combination of the various parts, as herein described, and for the purposes setforth.

Portland, Oregon, 15th day of Mai-ch, 1868.

" EDWARD H. KENT.

Witnesses:

O. M. GUs'rnR, C. B. TALBOT,- J. P. Fon'r. 

